I wear tunic dresses with leggings all the time.
I couldn't give two hoots what the fashion police say! Shorter dresses suit my body shape, but my legs ain't pretty these days.
"Leggings won't hide big legs - they're skintight and accentuate every line! Be confident and just wear your dresses - I am sure they'll look lovely" obviously said by someone who just doesn't get it!
I'm not trying to hide my legs being fat. I'm hiding the cellulite, the bruises (I am a clutz!), the stubbly legs when I haven't had a chance to shave, or even - shock horror! - the hair when I've let my leg hair grow for a while.
The single colour of a pair of leggings looks a whole lot better than my dimply, stubbly, bruised pins!
Also, I don't want to have to worry about not being able to bend over / sit with my legs slightly apart etc in case people get a flash of more than they bargained for! If I'm wearing leggings I can move freely. If I'm not I feel self-conscious and restricted in a short dress, and why should I?
I don't want to wear maxi-dresses or tights as a "solution". Nor do I want to have to spend hours preening myself so I am always shaved, buffed, concealer over bruises, good knickers and trimmed bikini line AT ALL TIMES just in case I do end up flashing people by mistake in a short dress.
What a faff!
Short dress, pair of leggings. Long leggings in winter, cropped leggings in summer.
Works for me :)